Welding Flux Used in Submerged Processing welding power SJ301

Short Description:

It can be used in single-pass and multi-pass submerged arc welding for a carbon steel and low-alloy structural steels with appropriate wires (such as EL12, EM12, EM12K etc.).


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Welding Flux Used in Submerged Processing welding power SJ301

SJ301  AWS F6A0-EL12

 

Applications:

It can be used in single-pass and multi-pass submerged arc welding for a carbon steel and low-alloy structural steels

with appropriate wires (such as EL12, EM12, EM12K etc.).

 

Characteristic:

TH·SJ301 is a Calcium-Silicon type flux, the grain size is 2.0mm-0.3mm (10-60 mesh) or 2.0mm-0.45mm (10-40 mesh),

the basicity is about 1.0. Can be used welding steel that have little rusty or dirty surface, especially for girth welding of small pipeline.

 

Attention:

1. Before using, the flux shall be re-dry for 2 hours at 300℃-350℃.

2. Remove rust, oil, water and other impurities in the weld zone is suggested before welding.

3. The mechanical properties of all weld metal be decided by heat input, normally the small heat input will better than larger one.

 

Mechanical Properties of All Weld Metal (TH·SJ301/THM-43):   

Items

Rm/MPa

Rel/Rp0.2 /MPa

A%

KV(-20℃) /J

Requirement

430-600

≥330

≥20

≥27

Typical Results

460

375

28

80

 

Physical And Chemical Properties of flux:

Items

S (%)

P (%)

Moisture content (%)

Mechanical inclusion (%)

Requirement

≤0.060

≤0.080

≤0.10

≤0.30

Typical Results

0.030

0.028

0.01

0.1

 


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